Finding the Fourth Proportional to 103,450.56, 142,767.88 and 77,911.88
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Solution
The fourth proportional to 103,450.56, 142,767.88 and 77,911.88 is: 107,522.99
Step by Step Solution
- Step 1: Write the proportion equation
103,450.56 : 142,767.88 = 77,911.88 : x - Step 2: Convert to fraction form
103,450.56/142,767.88 = 77,911.88/x - Step 3: Cross multiply
103,450.56x = 142,767.88 × 77,911.88 - Step 4: Simplify right side
103,450.56x = 11,123,313,934.41 - Step 5: Solve for x
x = 11,123,313,934.41/103,450.56 - Step 6: Final answer
x = 107,522.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.